User manual

Chapter 3: Qube 3 Services
42 Cobalt Qube 3 User Manual
POP-before-SMTP feature
The Qube 3 provides an option to allow POP authentication before SMTP. To
enable this feature, see “Configuring the email settings” on page 131.
Normally, you only permit email relaying from within your own network. But
some users travel and connect from other places (for example, sales people or
field engineers) and you want to let those users relay email through your server.
The way to allow this and still protect your Qube 3 from being used to relay spam
mail is to authenticate the user through POP before establishing an SMTP
connection.
When a user logs in for POP3 email, the Qube 3 notes the IP address from which
the connection was made and permits relay from that IP address for a limited
time. Travelling users need only check their email to “unlock” the mail server; no
changes to the client mail software are necessary.
The POP-before-SMTP implementation causes the IP addresses to expire after
15 minutes.
Mailing lists
A mailing list allows you to send messages to a certain group of people without
having to address them individually. You can create a mailing list comprising
users registered on the Qube 3 as well as email addresses external to the Qube 3.
When the Qube 3 Administrator creates a group, a mailing list is automatically
created for that group.
The email messages between members of a mailing list can be continuously
archived, allowing a user to review a thread of email messages. If you are a
member of a mailing list (either for a group or an independent mailing list), a new
item, Mailing Lists, appears in the left menu bar of the WebMail program on the
Programs site. You can view the archived email messages through the Mailing
List link.
For more information on viewing archived mailing lists, see “Mailing Lists” on
page 77.
For more information on managing mailing lists, see “Group List” on page 113.
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Note: By default, the Archive option is OFF for mailing lists.